Pacific krill. Millions of the inch-long shrimp-like animals have been washing up on beaches between Eureka, California and Newport, Oregon. Scientists do not know the reason why. Strong winds may have pushed them ashore while they were mating near the surface, or they may have run into an area of low oxygen

Years of drought are causing water levels at Agua Caliente in Tucson, Arizona to drop to extremely low levels. The main lake, as well as another overflow, are fed by a natural spring, seasonal rains and snowmelt runoff from the nearby Rincon Mountains.55,000 gallons of water each day are pumped into the lake

Scientists have been studying a type of antibiotic that is produced by bacteria that live in symbiosis with leaf cutter ants. They have identified the genetic pathway involved in producing the antibiotic, opening the possibility to use this natural product as the basis for new drugs, including anti-cancer treatments

One of the 10 zebra-snouted seahorses, with its father, born at the National Sea Life Centre in Birmingham. Zebra-snouted seahorses come from the Philippines and are one of the species under threat from the Chinese traditional medicine trade